TM 5-3895-374-24-1GP440FGN.LPGASFUELPIPINGSYSTEMWARNINGHauck requires the use of oil manifolds which meet NFPA guidelines. NFPA requires two shutoffvalves piped in series in the burners main oil line. A low pressure switch must be interlocked withthe burners shutoff valves. Haucks LP manifolds have been designed to meet NFPArequirements.WARNING !LP is highly flammable and heavier than air. It will accumulate near the ground in the area of aleak and it dissipates relatively slowly.1.Before attaching fuel lines, purge the lines with compressed air.2.Connect the main LP line at the appropriate connection on the burner skid.All piping must be schedule 80 or heavier and all valving must be suitable for 350 psig service. The capacity of thefuel system must be 1-1/2 times the rated capacity of the blower.3.If Hauck has supplied the LP pump set for this application, consult the pump installation instructions forinformation on this unit.Fig. 12-LP Piping Arrangement(page 3-517)